Among active 13F managers last quarter, 1 opened and none reduced or exited; the largest holder to move was Keating Financial Advisory Services, Inc. (new position).
4 tracked 13F filers disclose a position in MST as of the latest SEC 13F filings, a combined $44K in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Simplex Trading, LLC | 2K | $36K | ▲New +2K sh | Q1 2026 | |
| 2 | Group One Trading LLC | 760 | $5K | ▲+102% Added · +384 sh | Q2 2026 | |
| 3 | Keating Financial Advisory Services, Inc. | 194 | $1K | ▲New +194 sh | Q2 2026 | |
| 4 | CWM, LLC | 84 | $2K | ▲New +84 sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 1 fund opened a new position in MST, while none reduced or exited. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Their position there |
|---|---|---|
| Apple IncAAPL | 1 funds | $137.8M |
| Dimensional US Core Equity MDFAU | 1 funds | $55.2M |
| Nvidia CorpNVDA | 1 funds | $31.9M |
| Vanguard S&P 500 ETFVOO | 1 funds | $29.7M |
| Invesco S&P 500 Momentum ETFSPMO | 1 funds | $18.6M |
| Dimensional US High Profi EtDUHP | 1 funds | $16.2M |
| SS SPDR S&P 500 ETF Trust-USSPY | 1 funds | $11.9M |
| Dimensional Core Fixed IncDFCF | 1 funds | $10.2M |
| Dimensional International CoDFAI | 1 funds | $9.4M |
| Invesco QQQ Trust Series 1QQQ | 1 funds | $9.1M |
| Dimensional US Core Eq 1 ETFDCOR | 1 funds | $8.5M |
| Microsoft CorpMSFT | 1 funds | $8.3M |
Ranked by how many of MST's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in MST.
| Class | 13F holders | Value held |
|---|---|---|
| MSTXExchange Traded Fund | 22 funds | $7.5M |
| SMCXETF | 14 funds | $4.6M |
| IONZDEFIANCE DAILY T | 11 funds | $3.3M |
| ORCXETF | 10 funds | $10.5M |
| NVOXETF | 10 funds | $3.8M |
| DAMDDEFIANCE DAILY T | 10 funds | $1.7M |
| SMCZDEFIANCE DAILY | 8 funds | $3.9M |
| QPUXDEFIANCE 2X DAIL | 6 funds | $2.2M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
No filings captured for this ticker in the live stream yet.
Connected entities for MST
This ETF page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/MST/capital-change-brief"
Use Arkolith's capital_change_brief for MST. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + quarter-over-quarter ownership changes + end-of-day price history + the live filing stream, joined for MST. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.